Flat 6, 28 Onslow Gardens, London, SW7 3AG is a leasehold flat built between 1900-1929. The property offers approximately 355 square feet of living space and is situated on the 4th floor. In this location, apartments of similar size usually have one bedroom.

The estimated current market value of the property is £340,268 , which equates to approximately £958 per square foot. It was last sold on 18 Jun 2021 for £360,000. Since then, the value has decreased by £19,732, representing a 5.5% decrease, or approximately 1.2% per year.

The current estimated value of £340,268 is:

  • 75.4% lower than the average property price on Onslow Gardens
  • 74.9% lower than the average in the SW7 3AG postcode area
  • and 59.3% lower than the average price for London as a whole

Based on EPC inspection history, this property has been mostly owner-occupied (2 out of 3 inspections). This suggests the property has typically been lived in by its owners, which often reflects longer-term residency and more consistent maintenance.

At the most recent EPC inspection on 4 March 2025, the property was recorded as owner-occupied.

View sold house prices in SW7 3AG

Building approximate location

About Property

Type
Flat
Built
1900-1929
Interior Size
355 sq ft
Tenure
Leasehold
Floor level
4th floor
Price (estimate)
£340,268
Price Per sq ft (estimate)
£958
Bedroom Count (estimate)
1 bedroom

EPC Summary

Flat 6, 28 Onslow Gardens, London, Kensington And Chelsea, Greater London, SW7 3AG has an Energy Performance Certificate (EPC) rating of D, based on the latest assessment carried out on 4 Mar 2025.

This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are single glazed.

The previous EPC assessment was conducted on 12 Mar 2021. The rating of D is unchanged, though the energy efficiency score decreased by 1.5%.

Since the previous assessment, several changes were observed:

  • The roof construction or insulation changed from flat, no insulation (assumed) to pitched, no insulation, with no change in energy efficiency (very poor).
  • The wall energy efficiency changing from poor to very poor, with the construction or insulation remaining solid brick, as built, no insulation (assumed).
Heating Type
Boiler and radiators, mains gas
Good
Hot Water
From main system
Good
Roof
Pitched, no insulation
Very Poor
Walls
Solid brick, as built, no insulation (assumed)
Very Poor
Windows
Single glazed
Very Poor
Lighting
Low energy lighting in all fixed outlets
Very Good

Compared to SW7 3AG

21 st / 23
Price Rank
75% lower than average
7 th / 10
Size Rank
59% smaller than average
7 th / 10
Price Per Sq FT Rank
39% lower than average

Compared to other properties in SW7 3AG , this flat's estimated value ranks 21th out of 23. Based on price per square foot, it ranks 7th out of 10 properties. This indicates a lower price per square foot than most, suggesting good value for the space offered. In terms of size, this home ranks 7th out of 10 properties in its postcode area.

Sale History

Today
£340,268
streetscan.co.uk estimate
-5 %
18 Jun 2021
£360,000
Leasehold
-15.3 %
25 Sep 2017
£425,000
Leasehold
+84.8 %
5 Mar 2004
£230,000
Leasehold

Area Insights

Similar Properties Sold Nearby

rooms: 2
size: 334 sq ft
sale price: £620,000
sale date: 7 Oct 2015
rooms: 1
size: 344 sq ft
sale price: £440,000
sale date: 1 Jun 2010
rooms: 2
size: 355 sq ft
sale price: £290,000
sale date: 5 Jun 2002
rooms: 3
size: 384 sq ft
sale price: £1,301,000
sale date: 5 Mar 2021
rooms: 1
size: 366 sq ft
sale price: £605,000
sale date: 24 Jun 2013

Data Sources

The property at Flat 6, 28 Onslow Gardens, London, SW7 3AG appears three times in the Land Registry records, with the latest transaction recorded on 18 Jun 2021. It also has three Energy Performance Certificates (EPC) entries, the earliest dating back to 4 Mar 2025. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.